Air Extension Drill 6 inch; 12 inch
Material: HSS M2, Cobalt M35 Split Point: 118°， 135°
| Fractional Sizes | |||
| Size | Flute Length | Part Number | |
| 6" Overall Length | 12" Overall Length | ||
| 3/64 | 3/4 | 434-5003 | 434-9003 |
| 1/16 | 7/8 | 434-5004 | 434-9004 |
| 5/64 | 1 | 434-5005 | 434-9005 |
| 3/32 | 1-1/4 | 434-5006 | 434-9006 |
| 7/64 | 1-1/2 | 434-5007 | 434-9007 |
| 1/8 | 1-5/8 | 434-5008 | 434-9008 |
| 9/64 | 1-3/4 | 434-5009 | 434-9009 |
| 5/32 | 2 | 434-5010 | 434-9010 |
| 11/64 | 2-1/8 | 434-5011 | 434-9011 |
| 3/16 | 2-5/16 | 434-5012 | 434-9012 |
| 13/64 | 2-7/16 | 434-5013 | 434-9013 |
| 7/32 | 2-1/2 | 434-5014 | 434-9014 |
| 15/34 | 2-5/8 | 434-5015 | 434-9015 |
| 1/4 | 2-3/4 | 434-5016 | 434-9016 |
| 17/64 | 2-7/8 | 434-5017 | 434-9017 |
| 9/32 | 2-15/16 | 434-5018 | 434-9018 |
| 19/64 | 3-1/16 | 434-5019 | 434-9019 |
| 5/16 | 3-3/16 | 434-5020 | 434-9020 |
| 21/64 | 3-5/16 | 434-5021 | 434-9021 |
| 11/32 | 3-7/16 | 434-5022 | 434-9022 |
| 23/64 | 3-1/2 | 434-5023 | 434-9023 |
| 3/8 | 3-5/8 | 434-5024 | 434-9024 |
| 15/64 | 3-3/4 | 434-5025 | 434-9025 |
| 13/32 | 3-7/8 | 434-5026 | 434-9026 |
| 27/64 | 3-15/16 | 434-5027 | 434-9027 |
| 7/16 | 4-1/16 | 434-5028 | 434-9028 |
| 29/64 | 4-3/16 | 434-5029 | 434-9029 |
| 15/62 | 4-5/16 | 434-5030 | 434-9030 |
| 31/64 | 4-3/8 | 434-5031 | 434-9031 |
| 1/2 | 4-1/2 | 434-5032 | 434-9032 |
| Letter Size | |||
| Size | Flute Length | Part Number | |
| 6" Overall Length | 12" Overall Length | ||
| A | 2-5/8 | 434-5201 | 434-9201 |
| B | 2-3/4 | 434-5202 | 434-9202 |
| C | 2-3/4 | 434-5203 | 434-9203 |
| D | 2-3/4 | 434-5204 | 434-9204 |
| E | 2-3/4 | 434-5205 | 434-9205 |
| F | 2-3/4 | 434-5206 | 434-9206 |
| G | 2-7/8 | 434-5207 | 434-9207 |
| H | 2-7/8 | 434-5208 | 434-9208 |
| I | 2-7/8 | 434-5209 | 434-9209 |
| J | 2-7/8 | 434-5210 | 434-9210 |
| K | 2-15/16 | 434-5211 | 434-9211 |
| L | 2-15/16 | 434-5212 | 434-9212 |
| M | 3-1/16 | 434-5213 | 434-9213 |
| N | 3-1/16 | 434-5214 | 434-9214 |
| O | 3-3/16 | 434-5215 | 434-9215 |
| P | 3-5/16 | 434-5216 | 434-9216 |
| Q | 3-7/16 | 434-5217 | 434-9217 |
| R | 3-7/16 | 434-5218 | 434-9218 |
| Size | 3-1/2 | 434-5219 | 434-9219 |
| T | 3-1/2 | 434-5220 | 434-9220 |
| U | 3-5/8 | 434-5221 | 434-9221 |
| V | 3-5/8 | 434-5222 | 434-9222 |
| W | 3-3/4 | 434-5223 | 434-9223 |
| X | 3-3/4 | 434-5224 | 434-9224 |
| Y | 3-7/8 | 434-5225 | 434-9225 |
| Z | 3-7/8 | 434-5226 | 434-9226 |
| Size | Flute Length | Part Number | |
| 6" Overall Length | 12" Overall Length | ||
| #1 | 2-5/8 | 434-5101 | 434-9101 |
| #2 | 2-5/8 | 434-5102 | 434-9102 |
| #3 | 2-1/2 | 434-5103 | 434-9103 |
| #4 | 2-1/2 | 434-5104 | 434-9104 |
| #5 | 2-1/2 | 434-5105 | 434-9105 |
| #6 | 2-1/2 | 434-5106 | 434-9106 |
| #7 | 2-7/16 | 434-5107 | 434-9107 |
| #8 | 2-7/16 | 434-5108 | 434-9108 |
| #9 | 2-7/16 | 434-5109 | 434-9109 |
| #10 | 2-7/16 | 434-5110 | 434-9110 |
| #11 | 2-5/16 | 434-5111 | 434-9111 |
| #12 | 2-5/16 | 434-5112 | 434-9112 |
| #13 | 2-5/16 | 434-5113 | 434-9113 |
| #14 | 2-3/16 | 434-5114 | 434-9114 |
| #15 | 2-3/16 | 434-5115 | 434-9115 |
| #16 | 2-3/16 | 434-5116 | 434-9116 |
| #17 | 2-3/16 | 434-5117 | 434-9117 |
| #18 | 2-1/8 | 434-5118 | 434-9118 |
| #19 | 2-1/8 | 434-5119 | 434-9119 |
| #20 | 2-1/8 | 434-5120 | 434-9120 |
| #21 | 2-1/8 | 434-5121 | 434-9121 |
| #22 | 2 | 434-5122 | 434-9122 |
| #23 | 2 | 434-5123 | 434-9123 |
| #24 | 2 | 434-5124 | 434-9124 |
| #25 | 1-7/8 | 434-5125 | 434-9125 |
| #26 | 1-7/8 | 434-5126 | 434-9126 |
| #27 | 1-7/8 | 434-5127 | 434-9127 |
| #28 | 1-3/4 | 434-5128 | 434-9128 |
| #29 | 1-3/4 | 434-5129 | 434-9129 |
| #30 | 1-5/8 | 434-5130 | 434-9130 |
| #31 | 1-5/8 | 434-5131 | 434-9131 |
| #32 | 1-5/8 | 434-5132 | 434-9132 |
| #33 | 1-1/2 | 434-5133 | 434-9133 |
| #34 | 1-1/2 | 434-5134 | 434-9134 |
| #35 | 1-1/2 | 434-5135 | 434-9135 |
| #36 | 1-7/16 | 434-5136 | 434-9136 |
| #37 | 1-7/16 | 434-5137 | 434-9137 |
| #38 | 1-7/16 | 434-5138 | 434-9138 |
| #39 | 1-3/8 | 434-5139 | 434-9139 |
| #40 | 1-3/8 | 434-5140 | 434-9140 |
| #41 | 1-3/8 | 434-5141 | 434-9141 |
| #42 | 1-1/4 | 434-5142 | 434-9142 |
| #43 | 1-1/4 | 434-5143 | 434-9143 |
| #44 | 1-1/8 | 434-5144 | 434-9144 |
| #45 | 1-1/8 | 434-5145 | 434-9145 |
| #46 | 1-1/8 | 434-5146 | 434-9146 |
| #47 | 1 | 434-5147 | 434-9147 |
| #48 | 1 | 434-5148 | 434-9148 |
| #49 | 1 | 434-5149 | 434-9149 |
| #50 | 1 | 434-5150 | 434-9150 |
| #51 | 1 | 434-5151 | 434-9151 |
| #52 | 7/8 | 434-5152 | 434-9152 |
| #53 | 7/8 | 434-5153 | 434-9153 |
| #54 | 7/8 | 434-5154 | 434-9154 |
| #55 | 7/8 | 434-5155 | 434-9155 |
| #56 | 3/4 | 434-5156 | 434-9156 |
| #57 | 3/4 | 434-5157 | 434-9157 |
| #58 | 11/16 | 434-5158 | 434-9158 |
| #59 | 11/16 | 434-5159 | 434-9159 |
| #60 | 11/16 | 434-5160 | 434-9160 |
NAS 907, Type B, Type J
118° Split Point
135° Split Point
Note: Split point drills available from 1/ 8 " and above sizes
Sizes over 1/ 2 " are black oxide finish
